Using Percentage Worksheets With Answer Key - S1 Topic 15

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S1 Topic 15
Percentages 
Level: Key Stage 3
Dimension: Number and Algebra
Module:
Comparing Quantities
Unit:
Using Percentages
Student ability: Average
Content Objectives:
After completing the activity, students will be more familiar with fractions, decimals &
percentages, percentage change, discount, profit and loss.
Language Objectives:
After completing the activity, students should be able to
understand English key words related to the topic (e.g., fraction, numerator, denominator,
decimals, percent, percentage, new value, original value, increase, decrease, marked
price, discount, discount percent, saved, selling price, profit, loss, cost price);
understand the English expressions for explaining key concepts related to percentages,
e.g.,
- A percentage is a fraction whose denominator is 100.
- To change a fraction or a decimal to a percentage, we just multiply the fraction (or
decimal) by 100%.
x
- To change a percentage to a fraction or a decimal, we can replace % by
and
100
simplify the answer.
use English to discuss problems related to percentages, e.g.,
A: What is the marked price of this bicycle?
B: The marked price of this bicycle is $300.
A: What is the discount percent?
B: The discount percent is 30%
A: How much will Cathy save if she buys this bicycle?
B: Cathy will save $90 ($_300 x 30%_ = $_90).
A: How much will Cathy pay?
B: She will pay $210.
follow English instructions on solving problems concerning this topic and work on
related problems written in English.
Prerequisite knowledge:
Students should have learned about the concept of percentage through the medium of Chinese
and had some experience of calculating percentages.
Time: 4 lessons (4 x 40 minutes)
Procedure:
 
  1 
S1 Topic 15: Percentages

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